Drill-rigging.



M'. GRIFFITH. DRILL RIGGING.

APPLICATION FILED MAR. IT. 19!]. v I 1,251,22.- Patented Dec. 25,1917.

2 SHEETSSHEET I.

'Y O A;

' T 6% i gvwemkdz MOSEE) GRlFF\TH M. GRIFFITH.

DRILL RIGGING. APPLICATION FILED MAR. n. 19!?- Patented Dec. 25,1917.

I 2 SHEETS-SHEET 2.

i v amut Moses GiRlFFiTH UNITED STATES PATENT orrron.

MOSES GRIFFITH, OF FLORENCE, COLORADO, ASSIGNOR OF FORTY-NINE AND ONE-HALF ONE-HUNDREDTHS TO PHILIP GRIFFITH, OF FLORENCE, COLORADO; I

DBILL-RIGGIN G.

Specification of Letters'latent.

Patented Dec. 25, 1917.

Application filed March 17, 1917. Serial N 0. 155,545.

To all whom it may concern:

Be it known that 1, Moses GRIFFITH, a citizen of the United States, residing at Florence, in the county of Fremont and State of Colorado, have invented certam new and useful Improvements in Drill-Riggings, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to certain improvements in drill riggings and has relation more particularly to an apparatus of this general character especially designed and adapted for use in the drilling or boring of deep wells; and it is an object of the in vention to provide a device of this general character having novel and improved means whereby the drill may be elevated or withdrawn from within the bore or well with convenience and facility and whereby the possibility of injury to the drill man 1s sub- 7 stantially entirely eliminated.

It is also an object of the invention to provide a novel and improved device of this general character wherein the bull shaft has a tug wheel coacting therewith capable of being cletachably locked to the bull shaft whereby said tug wheel may remain idle or rotate with the bull shaft as the requirements of practice may dictate, together with a band wheel having cooperating therewith a second tug wheel adapted to either remain idle or rotate with said band wheel as required, and wherein the tug wheel of the bull shaft and the tug wheel associated with the band wheel are at all times operatively connected one with the other whereby the band wheel may be caused to properly rotate the bull shaft to elevate or raise the drill from within the bore or well.

The invention consists in the details of construction and in the combination and arrangement of the several parts of my improved drill rigging whereby certain important advantages are attained and the device is rendered simpler, less expensive and otherwise more convenient and advantageous for use, all as will be hereinafter more fully set forth.

hereinafter be definitely claimed.

In order that my invention may be the better understood, I will now proceed to describe the same with reference to the accompanying drawings, wherein The novel features of the invention will Figure 1 is a view in side elevation of a drill rigging constructed in accordance with an embodiment of my invention;

Fig. 2 is a sectional view taken substantially on the line 2-2 of Fig. 1;

Fig. 3 is a fragmentary view partly in end elevation and partly in section illustrating certain details of construction as herein embodied;

Fig. 4 is a sectional view taken substantially on the line H of Fig. 2:

Fig. 5 is a view in side elevation of one of the tug wheels as herein embodied and showing the clutch face carried thereby;

Fig. 6 is a view in elevation of a clutch member adapted to be keyed to either the bull shaft or the shaft of the band wheel and the crown or head H having the slot or opening 1 through which the drill cable O is directed; The cable 0 passes over the pulley 2 arranged at substantially the longitudinal center of the opening or slot 1 whereby it will be perceived that both of the strands of the cable are directed through said opening or slot. I

The end portion of the platform P adj acent the derrick D is provided with the posts or standards 3 in predetermined spaced relation transversely of the platform and which rotatably support the bull shaft B. One end portion of the bull shaft B extends beyond. a standard '3 but terminates inwardly of the adjacentside of the derrick D. V

Keyed or otherwise affixed to the extended portion of the shaft B is a clutch member 4: adapted to coact with the clutch face 5 arranged at the hub 6 of a tug Wheel 7. The tug wheel 7 is loosely mounted upon the extended portion of the shaft B but it will be at once self-evident that when said tug wheel 7 is moved inwardly of the shaft B, the face 5 thereof will lock with the clutch member at to cause the shaft B and the tug wheel 7 to rotate in unison and in the same general direction.

The outer end portion of the hub 6 has pivotally engaged therewith at diametrically opposed points 8, arranged in vertical alinement, the substantially annular member 9 provided with the outwardly directed tail piece 10 pivotally engaged with the vertically disposed pin 12 carried by the outer orfree end portion of the beam 14; The

3 tion.

The bull shaft B has also suitably ai'fixed thereto, at is end portion remote from the tug wheel 7, the brake wheel 16 with which coacts in any preferred manner the brake band 17 operated through the medium of the lever 18. As is believed to be self-evident the coaction between the brake bane 1' and the wheel 16 serves to retard the descent of a tool when being applied within a bore or well and which will also serve, as is believed to be self-evident, to maintainthe shaft B against rotation when the requirements of practice so necessitate.

The end portion of the platform P remote from the shaft 13 is provided with the upstanding standards 19 which serve as a bearing for the shaft 20. Suitably fixed to the shaft 20 is the band wheel 21 adapted to be connected in any desired manner but preferably through themedium of a drive belt or band, as indicated at 22 by dotted lines in Fig. 1, with a suitable source of power.

Loosely mounted upon the shaft 20 and substantially in longitudinal alinement with the tug wheel 7 is a second tug wheel 23 being provided at the inner end of its hub 24: with a clutch face 25 adapted to coact with the clutch member 26 keyed or otherwise aflixed to the shaft 20 at a point intermediate the band wheel 21 and the tug wheel 23.

The standard 19 adjacent the tug wheel 23 is provided with an outwardly directed I arm 27 to which is pivotally engaged, as at 28, the operating lever 29. The lever 29 is provided with the substantially annular member 30 pivotally engaged, as at 31, with the hub 2st of the tug wheel 23 at diametrically opposed points disposed in vertical alinement. The lever 29 is also of such a length as to have its free or inner end portion terminate in close proximity to the drill man.

Coacting with the tug wheels 7 and 23 is the cable 32- preferably of wire, said cable 32 being crossed so that when the tug wheels 7 and 23 are locked for rotation, the cable,

C will be so wound around the shaft B as to elevate or raise a tool from within the bore or well. By having the tug wheel 23 capable of disengagement from the band wheel 21 it will be perceived that during the drilling operation especially when the walking beam is in operation, the cable 32 will be immovable so that possibility of injury to the drill man or other persons will be eliminated. i

By having the tug wheel 7 capable of disconnection from the shaft B it will be perceived that the tool supported by the cable C may be lowered as required during the drilling operation. It is to be understood that normally during the drilling operation the tug wheel 7 is locked to the shaft B so that the cable 32 serves as an additional medium for holding the shaft B against rotation.

In practice I find it of especial advantage during a drilling operation that more or less power is required as occasioned by the weight of the drill or cable and the depth of the bore.

3 f denotes a substantially vertically disposed rocl: arm rotatably supported intermediate its length, as at 35, by the platform P. The arm 34 extends through the platform P and has its upper end provided with a roller 36 adapted to be engaged with a strand of the cable 32 for tightening the same when the necessities of practice may so require.

Pivotally engaged with the lower end portion of the arm 34 is a rigid link 37 which is also pivotally engaged with the lower end portion of the lever 38 extending through the platform P and pivotally supported thereby, as at 39. The lever 38 and arm 34 are in parallelism and it will be perceived that by impartingthe requisite movement to the lever 38, the roller 36 may be engaged with or disengaged from the cable 32.

From the foregoing description, it is thought to be obvious that a drill rigging constructed in accordance with my invention is of .an extremely simple and comparatively inexpensive nature and is particularly well adapted for use by reason of the convenience and facility with which it may be assembled, and it will also be obvious that my invention is susceptible of some change and modification without material departure from the principles and spirit thereof and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice, except as hereinafter claimed.

I claim:

1. In a drill rigging, the combination with a bull shaft, of a band wheel and the shaft for the band wheel, a tug wheel loosely mounted on the bull shaft, a clutch member fixed to the bull shaft, said tug wheel being provided with a clutch face coacting with the clutch member, means for moving the tug wheel toward or from the clutch member, a second tug wheel loosely mounted on the shaft of the band wheel, a clutch member fixed to said last named shaft, said second tug wheel being provided with a clutch face coacting with the clutch member on the band wheel shaft, means for moving said second named tug wheel toward or from its coacting clutch member, and an endless cable directed around the tug wheels.

2. In a drill rigging, the combination with a bull shaft, of a band wheel and the shaft for the band wheel, a tug wheel loosely mounted on the bull shaft, a clutch member fixed to the bull shaft, said tug wheel being provided with a clutch face coacting with the clutch member, means for moving the tug wheel toward or from the clutch member, said means including an inwardly directed elongated member, a second tug wheel Copies of this patent may be obtained for loosely mounted on the shaft of the band wheel, a clutch member fixed to said last named shaft, said second tug wheel being provided with a clutch face coacting with the clutch member on the band wheel shaft, means for moving said second named .tug wheel toward or from its coacting clutch member, said means including an inwardly directed elongated member, and an endless cable directed around the tug wheels.

3. In a drill rigging, the combination with a bull shaft, of a band wheel and the shaft for the band wheel, a tug wheel loosely mounted on the bull shaft, a clutch member fixed to the bull shaft, said tug wheel being provided with a clutch face coacting with the clutch member, means for moving the tug wheel toward or from the clutch member, a second tug wheel loosely mounted on the shaft of the band Wheel, a clutch nieniber fixed to said last named shaft, said second tug wheel being provided with a clutch face coacting with the clutch member on the band wheel shaft, means for moving said second named tug wheel toward or from its coacting clutch member, an endless cable directed around the tug wheels, and a tensioning device coacting with the cable.

In testimony whereof I hereunto afiix my signature in the presence of two witnesses. MOSES GRIFFITH. Witnesses:

W. E. LAWSON, M. R. WILSON.

five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

